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Rice
Fig. 2 | Rice

Fig. 2

From: Pervasive interactions of Sa and Sb loci cause high pollen sterility and abrupt changes in gene expression during meiosis that could be overcome by double neutral genes in autotetraploid rice

Fig. 2

Pollen abortion stages of autotetraploid rice hybrids with allelic interactions at Sa, Sb and Sc pollen sterility loci. a-d, Abnormal pollen development in a hybrid with interaction at Sa pollen sterility locus. a Tetrad stage, one microspore degradation. b Tetrad stage, two microspores degradation. c Tetrad stage, morphological abnormalities. d Tetrad stage, callose remained after completion of meiosis. e-h, Abnormal pollen development in a hybrid with interaction at Sb pollen sterility locus. e Metaphase II, spindle abnormalities. f Metaphase II, spindle abnormalities. g Metaphase II, spindle abnormalities. h Tetrad stage, one microspore degradation. i-l, Abnormal pollen development in a hybrid with the interaction of Sc pollen sterility locus. i Tetrad stage, microspore degradation. j Tetrad stage, microspore degradation. k Tetrad stage, microspore degradation. l Tetrad stage, cell shrinkage. m-p, Abnormal pollen development in a hybrid with interactions at SaSb pollen sterility loci. m Tetrad stage, one microspore degradation. n Tetrad stage, two microspores degradation. o Middle microspore stage, cell shrinkage. p Middle microspore stage, cell shrinkage. q-t, Abnormal pollen development in a hybrid with the interactions of SaSbSc pollen sterility loci. q Dyad stage, cell shrinkage. r Dyad stage, cell shrinkage. s Tetrad stage, cell shrinkage. t Middle microspore stage, cell shrinkage. Bars = 40 μm

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